When a number replaces the variable in an algebraic expression, you can evaluate the expression to one number. To find 2c + 14 when c = 10, we follow these steps:
Rewrite the expression:
2c + 14
Wherever we see the variable, substitute the given number inside of parentheses:
2(10) + 14
Simplify the expression following the order of operations:
2(10) + 14 ← We should multiply before we add.
20 + 14 ← Now we can add.
34
In step two, it’s important to put the given number inside of parentheses when we substitute because we don’t want it to look like it’s part of the coefficient. 2(10) = 20. Without parentheses, it might look like 210!
What is 5 + 11g when g = 4?
A
119
B
64
C
49
D
44
To evaluate the expression 5 + 11g when g = 4, we follow the steps:
1. Rewrite the expression:
5 + 11g
2. Wherever we see the variable, substitute the given number inside of parentheses:
5 + 11(4)
3. Simplify the expression following the order of operations:
5 + 44
4. Add:
49
Therefore, the value of 5 + 11g when g = 4 is 49.
So, the correct answer is C) 49.